Ophthalmic mounting



7 Oct. 13, 1931. N. M. BAKER OPHTHALMIC MOUNTING Filed Oct. 3. 1929 IN VEN ATTO EY COMPANY, 017 SO-UTHBBIDGE;=MASSACHIISETTS,A VOLUNTARYi A SSOGIATION 'if I V V an-ophthalmic mounting,la;nd particularly in l9 7 Patented Och 13,1931 f I REL-son u;3113mmo1- soouifinitinogi; iltiissncnosmdrs,hssIeN oR To AMERICAN; or:

or mssAcH sET'rs I This invention i'el a tesi ophthalmic, mountin s andhes particular reference to improve means an connecting the lens holdingnle i ,mounting.'-

n Aprineipal' objedtof'this invention 1s to provide means for securelyattaching lend et the same time e esilyjre'moving. the br dge in d 'Inethp for axgoggle-oreye protector where an e'djnstused r e Another. object. of the invention is to pro- Vide means .of locking the remoyable bndge 5 inplac'e so that therewillbe'no'oppoi tunity for it to slip oriloo seii while mo l l l l pgl is'inuse. v

. Another obj iwoin bridge covering and its: replacement by new ones withouta'the use of 'special tools. "Another object of the invention isto p'ro- -vide simple means of:adjusting.fthefdistence A 4 5 of illustration.

between jthe lens-holding membersin ;si eh; a (m nting: T 1; Anotherobject of the in'izehtioni vide improved connecting foifjthe lenses of the flexible type bridge, sothetithe' jlen's holding means maybe folded oinp aotly for placingin'thepQoket ea -j, 7

Other objects end advantages fofthe inven tion" will become parent frQmQth'e jf llow- I ling description taken in connectionwiththe 1 parent that many changes lmey bemadein the fdetails of construction; 'er 'angen eiits of parts .7 and steps 1 the 1 process without de- 'kpztrting from thespirit of the invention as expressed in the accompanying claims. I,

therefore, do not wish tobe limited to the vexact details shown :zind-describedzas the preferred' .forms only haye beenf shown zby way Iable or. flexible type of bridging possible- 'the ready removal of -.-s0i l'ed and g l seeil'that the face." .Theseohain bridges are often covered with'a rubber tube orsome similarproteetiye- ,65 1 cqmingrustd and 'discolor dffomper's immember hi h prevents the chain from be;-

riehly permanently fixed to the eye cups at each end and not removable without a great deal o'f lebor: and damage, it will bereadily I p perspective view'showingthe "features of the, invehtiohend showing the 60 qeheim which permits, a ;close-- contact between the edge of the eye 611p and the wearers i0 protective covering will become soiled and unsanitary aft-(ar a short tiinejand thatno means areprovided forchanging it.

t isg also a; feature of these bridges that j' ustnlentofthe distance between the eye-cu s -isfu'sually-made by twisting each eye cup *and gso shortening'th'e chain, and while the desired distonc'eflcould "beobtained in'this way by" twistingthe eye cup the adjustment wsis' iii'lmediately lost when the mounting was i-, 'movedfrom the face of the wearer; It will also b'e' apparent "that drawbacks are associated with twistin ment other than the non-permanency ofedjustment, these drawbacks. including an nnunnatural position of the chain inside.

the eye cups for adjust- --*It' is the prime object of my 'invehtioi'1,

therefore, to provide simple means to over- 1 '5 I p coinethese and other difficulties endfto pr o- 55 I "In those types of eye protectors used in in; I

("shippers and 3 due strain on the covering member from the is slightly smaller. than the lenses 1, in place A tween the said anchor plates and the eye: cups down in place and vide an efficient, economical and ingenious means to carry out the objects of the invention.

Referring to the drawings, in which similar reference characters designate similar parts throughout the several views, the lenses 1 are held in a lens rim or eye cup 2 in the usual manner. The eye cups are provided with a head band 3 for holding the mounting on the face of the wearer and are ventilated by the cut 4, preferably protected from the entrance of flying particles by the mesh screen 5. Extending between the eye cups 2 is a bridging member formed of a plurality of hollow ball members 6 which are made of thin sheet material and these hollow members are connected by a loose link 7 which is headed over on the inside thereof so as to produce a loose connection so that the series of connected balls has somewhat the action of a link chain. In order to provide a soft contact for the wearers nose a tubular member 12 of tough rubber or other soft material may he slipped over the ball members comprising the bridging portion. Securing the bridge to each eye cup is an anchor member 8 bent to the shape shown in the drawing, and having its lower portion 9 formed as a curved plate and joined to the eye cups 2 by rivets 10 or other suitable securing means. The upper portion of the anchor plate 9 is bent to stand away from the eve cup when the plate is secured thereto and has a slot 11 which communicates with the hole 13 which the ball members 6, and has a chamfer or countersink 14: on its inner edge.

From Figs. 1- an m it willbe seen" that the anchor member 8 is spaced from the eve cups 2 enough to allow the cap l2'which holds to be'screwed down be- 2.. The slot 11 is made large enoughto allow the links 7 to slip freely therethrough but the hole 13 is too smallto allow the ball members 6 to pass therethrough.

I In theopera'tion of the device the capmember 12 is first unscrewed fromthe cups 2 and the link member 7 passed through the slot 11 so that the end ball 6 of the bridging member will fit in the countersunk seat of the hole 13. The cap member 12 is thenscrewed pushes the ball member 6 onto the countersunk seat and so looks it in position. To remove the bridging member this proceeding is r'eversedand the cap member 12 is unscrewed, whereupon the ball member 6 may be pushed off its seat on the anchor plate 9 and the link member 7 drawn through the slot 11. The links of the chain of ball members 6 will set the distance apart of the eye cups for various wearers pupillary distances. In orderto shorten the distance one or more ball members may be clipped from the ball chain bridging member and a shortor worn and so adds to the cleanliness of the goggle and prevents rusting of the metal chain, which would take place were a worn tubular covering to be used, aswas inevitable in the prior art. I

It will be understood that while I have shown the bridging member connected to both sides in aquickly removable manner, if desired the bridging member may be positively secured on one side allowing the whole adjustment for distance between the lenses to be made on the other side or the tubing to be removed by removing one side only.

From' the foregoing it will be seen that I have. provided simple and eflicient means of carrying out the objects of the invention, particularly in providing simple means for detaching the bridging member of anoph- V the type described without danger of the bridging member becoming loosenedwhile the mounting is-in use.

Having described my invention, I claim:

thalmic mounting of lfIn a device of the character described,

a pair of lens holding members, a bridging member extending between the lens holding members, said bridging member having a plurality of separated enlarged portions connected by a relatively small neck portion, a bifurcated member on each lens holding member having its bifurcationspaced to admit the neck portionand having a-seat adjacent the bifurcation to seat the enlarged portion,and cap members holding members and extending between the bifurcated member and-lens holding means to retain the enlarged portion of the bridge in its seat.

engaging the lens 2. In a device of the character described, F

a pair of lens holding members, a bridging member'extending between the lens holding members, said bridging member having aplurality of ball members connected by relatively small link portions, a bifurcated member on each lens holding member having its bifurcation spaced to admit one of the link portions and having a'seat adjacent the bifurcation to seat one of the ball members and cap members engaging the lens holding members and extending between the bifurcated member and lens holding means to retain the ball member of the bridge in its seat.

3. In a device of the character described, a pair of lens holding members,

of said lens holding members, a bridging a lens in each r j plurality of separated enlarged'portions con I Y member extending between the lens'holding members said bridging member having a nected by a relatively smallneck portion, a bifurcated member on each lens holding member having its bifurcation spaced to ad-' mit the neck portion and having a seat ad? 'jacentthe bifurcation. to seat the enlarged portion and cap members engaging the lens ber simultaneously.

NELSONMLBAKER. Y 

